Bevel gear holder



June 20, 1950 c. F. TELFoR ErAL BEVEL GEAR HOLDER 2 sheets-sheet 1 Filed March 3, 1947 Resting upon the shoulder 38 is a ring 50 hav-' i ing the inwardly projecting circumferentiallyf spaced apart tongues which are adaptedrto engage in the spaces 35 between theiteeth' and in each of which is formed a cavity or recess? in which is positioned a ball 53 restingvupron the beveled face 31a.

The construction is such that when the lparts are in the assembled position shown in Fig. l, a rotation of the hub 22 to unthread it from' the stud 23 will cause the flange 2| to vmove upwardly and thus serve as a thrusting member for thrusting against the balls 44. As this thrust is delivered the presser sleeve 36 would moveupwardly as would likewise the ring 39 and the` ring 50 thus forcing the gear 33'into contact 'with the tongues or members 32. As this pressure'con'- tinues, the balls would be forced, on aceount of their contactwith the beveled faces`,tolmo'\1efra dially inwardly between adjacent teeth soas to engage the opposed faces of adjacent teeth. The engagement of the balls 49 andthe balls 53 would, of course. be simultaneous so that there would thus be eii'ected a centering of the gear relative to the supporting member |1. The use of the balls and the various parts assembled as indicated affords a structure which may be easily and quickly operated and whichy will notbind in operation. It also affords a means for centering la bevel 'gear by engaging the teeth which are inclined to the axis of the gear at spaced apart points'.-

lIn Fig. 6, we haveshown a slight modication in which the supporting member comprises a ring 60 having a sleeve 8| formed integral therewith in which is positioned a presser-sleeve 62 having the recess 63 and provided with the bevel face 64 on one end and-a beveled face 55 on the opposite end. Positioned within the ring 62 is a ring 66 having a beveled face B1, these beveled faces 65 and 51 forming a race-way forA the balls 2,69 which bear against the upper face of the ring 60. -A ring Se' is cut away as at 68 and provided with a beveled face 69 against which bears a ball positioned in the cavity 13 formed Iin the tongue 12 which projects from the ring 1|' and' which is adapted to engage in the space'15 between the teethv of the gear 11. A ring'18 is positioned within the sleeve 62 and bears upon the sealing ring 19 which engages the upper face of the ring 66. This ring 18 is provided with the circumferentially spaced tongues 8| in each of which is formed a cavity 80 in which' is positioned a'ball 82 bearing upon the beveled face $4. A gear engaging ring 83 is positioned within the sleeve 84 and engaged by the over-hanging lipA 85 on the sleeve 84 the ring 83 having'a beveled face 86 againstv which the lip 85 bears." This ring 83 is adapted' to engage the end faces of the teeth -18 formed on the gear 11.

` Threaded on the sleeve 84 is a ring 81 having the gripping portion 89 whereby this ring 81 may be rotated. Sealing strips 88 and 88a are positioned between the sleeves 84, the ring 81, and the sleeve 6 I. Formed in the sleeve 84 is a spiral- 4 ly directed slot 90 in which engages a stud 9| threaded into the sleeve 6 The construction is such that when the gear is placed as shown in Fig 6, the presser ring 83 in position, the ring 81 may be threaded on the ring 31| so as to draw the various parts inwardly and force the balls 14 and 82 inwardly to engage opposed faces of adjacent teeth and center the gear relatively to the member 60. When this position has been reached the stud 9| will be at one end of the slot 90. In order to release the gear it is but necessary to rotate the ring 8'! in the oppo- -lsite direction so that the stud will engage the opposite end of the slot and when in this posiis av simple and easy operation to remove and v replace the gears when the desired size has been obtained through the adjustment eiiected by the parts as described.

In Fig. 8, we have shown a further modification in which there is a supporting member 91. The upper end of this supporting member 01 is provided with 'the inwardly projecting circumferentially spaced apart tongues 98 which are adapted tol engage the periphery of the bevel gear ||3or the ends of the teeth ||2 which are formed on the gear. Projecting centrally of the supporting member 92 is an externally threaded stud 93 which constitutes an end of a hydraulically or pneumatically operated draw bar. Threaded onto the member 93 is a hub 99 which carries the ring 0| in which is formed the groove |02- for reception of the end of the stud |03 which is threaded through the member 91. A ring |04 rests upon the face |05 and this ring |04 is provided with a plurality of circumferentially spaced apart tongues |05 in each of which is formed a cavity l|01 for reception of a ball |08, this ball resting upon the beveled face |09 of the member |0| and being adapted to-engage in the space between the opposed faces of adjacent teeth ||2. The construction is vsuch that when a gear is placed in position,V the hub 39 is threaded onto the stud into proper position so that when the parts are moved to the-'position shown in Fig. 8,

the gear will be securely clamped in position.

The tongues 98 will contact thev gear and theballs |08 will engage in the spaces and bear against the opposed faces of adjacent teeth 2 so as to properly center the gear relatively to the rection the gear will be forced into contact' againstv the tongues 98 and the balls |08 will beA forced into contact with the opposed faces of the teeth to securely hold the gear in position. Consequently, when the device is'adjusted for a definite size gear, the gear may be removed and replaced without disturbing the adjustment of the mechanism and this securing of the gear in position and releasing it is effected through the longitudinal movement of the draw bar ofwhichv the stud 03 forms a part.

In Fig. 11, we have shown a further modication in which a supporting member |5ris provided with the peripherally threaded flange ||6 on which is threaded the sleeve ||1 on which is mounted the ring ||9 having the grips ||8 formed thereon. An inwardly projecting flange on the sleeve ||1 serves to engage a sealing stripv |2| resting upon the shoulder |22v formed on'the' ring [23. This ring 23 is provided at its upper end with the inwardly projecting flange 124 to overlie the ring E25. This flange 12d is provided with the beveled face it which engages the beveled face lill on the ring 125. This ring IE5 is provided with the plurality of spaced apart cavities Hi8 in which engages a ball i2?) which is adapted to bear against the end faces i3d of the teeth i3d of the gear lt'l. Positioned on the shoulder i3d, formed on the support lib, is the ring 35 having a plurality of circumferentially spaced apart tongues |35, each of which is adapted to engage in the space v931:5 between adjacent teeth E32. Each of these tongues H35 is provided with a recess or cavity E37 for reception of a ball The construction is such that upon a threading of a ring or sleeve il? onto the ilange iid, the member ll will be drawn axially downwardly to force the balls 12S against the end faces of the teeth @32 and to force the balls |38 to engage the opposed faces of adjacent teeth so that the gear lill thus becomes centered relatively to the support l lil. The balls E3B pressed in the raceway formed by the beveled face i3d on the member H5.

Experience has shown that a holding device of this class is admirably adapted for centering a bevel gear and that the centering may be quickly effected and the gear held rigid so that it cannot become displaced during an operation such as a nishing or boring operation.

What we claim as new is:

l. A gear holding device of the class described, coi` prising: a supporting member; a tubular sleeve secured. to and projecting outwardly from one end of said supporting member, said supporting member having a recess formed therein; a threaded stud projecting upwardly from the base of said recess centrally thereof; a hub threadable onto and on of said stud; a flange on one end of said hub and positioned in said sleeve; a presser sleeve positioned within said rst named sleeve and movable axially thereof and having one of its end bases beveled on the inner side and provided intermediate its ends with a shoulder and an inwardly directed beveled face beveled in the direction opposite the direction of the beveled end; a ring positioned within said presser sleeve and movable axially thereof and having a beveled surface on one of races co-operating with the end beveled face of said presser sleeve to provide a ball race; balls positioned in said ball race and engaging said beveled surfaces and the face of said flange; a shoulder on said ring projecting inwardly from the inner face thereof; a ring resting on said last named shoulder; a plurality of circumferentially spaced apart tongues on said last named adapted for engagement in the spaces between the teeth of a bevel gear to be operated upon, each of said tongues having a cavity formed therein for the reception of a ball; a ball positioned in each of said `cavities and adapted upon axial movement of said iirst named ring for moving into engagement with'the faces of teeth of a gear to be operated upon; a ring carried on the shoulder of said presser sleeve; a plurality of circumferentially spaced apart tongues on said last named ring adapted for engaging in the spaces between the teeth of a bevel gear to be operated upon, each of said tongues having a cavity for the reception of a ball; and a ball positioned in each of said last named cavities and adapted for moving into engagement with the faces of the teeth of a bevel gear to be operated upon, upon axial movement of said presser ring; an inwardly directed lip on the end of said first named sleeve; means engageable with said lip and the end of a bevel gear to be operated upon for resisting axial movement of said bevel gear.

2. A gear holding device of the class described, comprising: a supporting member; a tubular sleeve secured to and. projecting outwardly from one end of said supporting member, said supporting member having a recess formed therein; a threaded stud projecting upwardly from the base of said recess centrally thereof; a hub threadable onto and oil of said stud; a flange on one end of said hub and positioned in said sleeve; a presser sleeve positioned within said first named sleeve and movable axially thereof and having one of its end bases beveled on the inner side and provided intermediate its ends with a shoulder and an inwardly directed beveled face beveled in the direction opposite the direction of the beveled end; a ring positioned within said presser sleeve and movable axially thereof and having a beveled surface on one of its faces (zo-operating with the end beveled face of said presser sleeve to provide a ball race; balls positioned in said ball race and engaging said beveled surfaces and the face of said iiange; a shoulder on said ring projecting inwardly from the inner face thereof; a ring resting on said last named shoulder; a plurality of circumferentially spaced apart tongues on said last named ring adapted for engagement in the spaces between the teeth of a bevel gear to be operated upon, each of said tongues having a cavity formed therein for the reception of a ball; a ball positioned in each of said cavities and adapted upon axial movement of said rst named ring for moving into engagement with the faces Of teeth of a gear to be operated upon; a ring carried on the shoulder of said presser sleeve; a plurality of oircumferentially spaced apart tongues on said last named ring adapted vfor engaging in the spaces between the teeth of a bevel gear to be operated upon, each of said tongues having a cavity for the reception of a ball; and :a ball positioned in each of said last named cavities and adapted for moving into engagement with the faces of the teeth of a bevel gear to be operated upon, upon axial movement of said presser ring; an inwardly directed lip on the end of said first named sleeve; means engageable with said lip and the end of a bevel gear to be operated upon for resisting axial movement of said bevel gear; and means accessible exteriorly of said supporting member for rotating said hub on said stud for delivering a thrust to said first named balls for moving said rings axially of said rst named sleeve for forcing the balls thereof into engagement with the side faces of the teeth 0f a beveled gear positioned therein.

CLARENCE F. TELFOR. CHRISTIAN PALLENBERG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,056,954 Sponable Mar. 25, 1913 1,370,598 Lapointe Mar. 8, 1921 1,664,085 Naylon Mar. 27, 1928 i 1,850,614 Aisenstein Mar. 22, 1932 

